Synthesis and characterisation of sodium trititanate whisker surface Cd(II) ion-imprinted polymer and selective solid-phase extraction of cadmium

Authors: Li, Chunxiang¹; Zhang, Zulei¹; Pan, Jianming¹; Gao, Jie¹; Zhao, Ganqing¹; Guan, Weisheng²; Yan, Yongsheng³

Source: International Journal of Materials and Structural Integrity, Volume 4, Numbers 2-3, 14 September 2010 , pp. 291-307(17)

Publisher: Inderscience Publishers

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Abstract:

A new surface ion-imprinted polymer (IIP) was synthesised with sodium trititanate whisker in the presence of Cd(II), chitosan (CTS) and γ-glycidoxypropyl trimethoxysilane (KH-560). The prepared surface IIP was characterised by using FTIR, UV, XRD and SEM. A batch of adsorption experiments were performed to evaluate the adsorption behaviour of Cd(II) using inductively coupled plasma atomic emission spectrometry (ICP-AES). The effects of solution pH and sorbent amount on the extraction of Cd(II) from aqueous solutions were studied. The adsorption kinetics and adsorption isotherm were also obtained. The Langmuir isotherm can fit the experimental equilibrium data. Under the optimum conditions, the value of the adsorption was above 99%, and the maximum adsorption capacity was 52.34 mg/g. In accordance with the parameters distribution coefficient (Kd) and selectivity coefficient (K), the selectivity for Cd (II) of the prepared imprinted polymer was higher than non-imprinted polymer. Finally, the reuse of imprinted sorbent was discussed and showed that it could be reused nine times with about 5.0%-6.0% regeneration loss. The detection limit of 0.024 μg/mL−1 with the relative standard deviation (RSD) of 1.74% (C = 1.0 μg/mL−1, n = 13) of this method was obtained.

Keywords: SCIENCE, ENGINEERING AND TECHNOLOGY; Civil Engineering and Structures; Materials and Manufacturing

Document Type: Research article

DOI: http://dx.doi.org/10.1504/IJMSI.2010.035211

Affiliations: 1: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China. 2: School of Chemistry and Chemical Engineering, Chang 3: an University, Xi

Publication date: 2010-09-14

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International Journal of Materials and Structural Integrity is a fully-refereed journal that aims to provide a unique medium of communication for multidisciplinary approaches, either empirical or theoretical, to the study of materials and structural integrity. Its goals are to promote cross-fertilization of ideas between all the scientific disciplines having to deal with their own materials and structural integrity, including engineering, bionics, physics and chemistry.
International Journal of Materials and Structural Integrity is committed to the highest scientific standards, judging contributions on their contents and scientific value alone, rather than whether methods, questions, style, or language conform to the customs of a particular field.
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Synthesis and characterisation of sodium trititanate whisker surface Cd(II) ion-imprinted polymer and selective solid-phase extraction of cadmium

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